This is the moment a BBC film crew were held by security teams at the notoriously secretive Area 51 - where conspiracy theorists believe the American government is hiding a flying saucer.

Irish comedian Andrew Maxwell and UFO expert Darren Perks sneaked past the border at the site - and were forced to lie on the ground at gunpoint for three hours while the FBI checked their credentials.

It is the same 'documentary' team that caused outrage in Britain last week when they suggested that the 7/7 London bombings were part of a government conspiracy to boost support for the Iraq war.